The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 15, 1989

Filed:

Dec. 09, 1988
Applicant:
Inventors:

Kuzhikalail M Abraham, Needham, MA (US);

David M Pasquariello, Pawtucket, RI (US);

Assignee:

EIC Labotatories, Inc., Norwood, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429194 ; 429148 ; 252622 ;
Abstract

The invention features the use of redox reagents, dissolved in non-aqueous electrolytes, to provide overcharge protection for cells having alkali metal negative electrodes (anodes). In particular, the invention features the use of organometallic compounds, known as metallocenes, as redox shuttle reagents to provide overcharge protection. Specific examples of this invention are bis(cyclopentadienyl)iron, known as ferrocene; bis(n-butyl-cyclopentadienyl)iron, known as butylferrocene; bis(cyclopentadienyl)nickel, known as nickelocene; and bis(cyclopentadienyl)cobalt, known as cobaltocene. An example of a rechargeable battery in which these redox reagents are used as an Li negative electrode and a TiS.sub.2 positive electrode.


Find Patent Forward Citations

Abraham, Kuzhikalail. (1989). Overcharge protection of secondary, non-aqueous batteries (U.S. Patent No. 4857423). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4857423

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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